27 research outputs found
Supercontinuum generation from 1.35 to 1.7 mu m by nanosecond pumping near the second zero-dispersion wavelength of a microstructured fiber
International audienceWe experimentally study a new regime for supercontinuum (SC) generation in the nanosecond pulsed regime using a nucrostructured optical fiber with two zero-dispersion wavelengths (ZDWs). Pumping at 1535 nm around the second ZDW yields a nearly flat SC over 1350-1700 nm. The interplay between the effects of modulation instability and stimulated Raman scattering are described through simple phase-matching relations
Low-threshold all-fiber 1000 nm supercontinuum source based on highly nonlinear fiber
International audienceWe present an highly efficient all-fiber compact supercontinuum source that exhibits a nearly flat spectrum from 1.1 ÎĽm to 2.1 ÎĽm. This broadband infrared optical source is made-up of a highly non-linear fiber pumped by a 1.55 ÎĽm self-Q-switched Er-Brillouin nanosecond pulsed fiber laser, which in turn is pumped by a low-power 1480 nm laser diode. In this work we highlight the great potential of highly non-linear fiber for supercontinuum generation with respect to conventional dispersion-shifted fiber by demonstrating a significant 10 dB power enhancement in the short wavelength side of the supercontinuum
Enhancement of two photon fluorescence collection by using effectively single mode double clad hollow core fiber with low dispersion at 800Â nm
Broadband modeless cw semiconductor laser: design and coherence properties
International audienc
Réalisation d'une source ultra-large bande entièrement fibrée par génération de supercontinuum
International audienc
Interplay of four-wave mixing processes with a mixed coherent-incoherent pump
We experimentally demonstrate the existence of multiple, simultaneous, independent four-wave mixing processes in optical fibers. In particular we observe competition between phase-matched and non-phasematched processes involving the same mixed coherent-incoherent pump. Further investigation reveals that narrow-band degenerate four-wave mixing with an incoherent pump can lead to efficient wavelength conversion
Demonstration of a compact low-threshold supercontinuum fiber laser source in the range 1.1-2.1 µm
Simultaneous observation of multiple four-wave mixing processes in the phase-matched and non-phase matched regimes
International audienc